X-ray examination apparatus

Details X-ray examination apparatus X-ray examination apparatus

1994-03-14

1996-01-09

Church, Craig E.

X-ray or gamma ray systems or devices

Beam control

Filter

378145, G21K 300

Patent

active

054835720

ABSTRACT:
Absorption filters are positioned in an x-ray examination apparatus according to the invention by adjusting them on the basis of the posture of the carrier supporting the x-ray source and the x-ray detector. To that end adjustment curves relating carder posture to filter adjustment are employed. The posture of the carder determines the orientation of the x-ray beam path. Because there are relatively few anatomical differences among patients to be examined, the adjustment of absorption filters on the basis of the beam orientation is quite adequate. Further improvement is achieved by providing sets of adjustment curves, each set pertaining to a class of patients, such as e.g. corpulent or slender patients, or infants or adults.

REFERENCES:
patent: 3932759 (1976-01-01), Brundin
patent: 5107529 (1992-04-01), Boone
patent: 5185775 (1993-02-01), Sirvin
patent: 5287396 (1994-02-01), Stegehuis

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